Amos k



(No Model.)

A. K. GAVERLY.

MACHINE FOR ROUNDING BENT HANDLES.

No. 303,116. Patented Aug. 5, 1884.

UNITED STATES PATENT @rrrcs.

AMOS K. GAVERLY, OF MOLINE, ILLINOIS, ASSIGNOR TO SARAH CAVERLY,

OF SAME PLACE.

MACHINE FOR ROUNDING BENT HANDLES.

SPECIFICATION forming part of Letters Patent No. 303,116, dated August5, 1884.

Application filed November 23, 1883.

To all wlwnt it may concern:

Be it known that I, AMOS K. OAVERLY, of Moline, in the county of RockIsland and State of Illinois, have invented certain new and usefulImprovements in Machines for Rounding Bent Handles and otherWood-I'Vork, of which the following is a specification.

Heretofore the bent portions of handles-used on cultivators and forother purposes have been rounded or ovaled to fit the hands of theoperator by an ordinary draw-knife, in some instances by a lathe with aset-knife and in others by various styles of rotary cutters, and ineither case smoothed or finished by running them over a sand-belt. Theovaling or rounding of wood-work for other purposes has beenaccomplished by similar means and finished or smoothed in like manner.

My invention relates to machines for forming such round or oval onbent-wood handles and other wood-work,whether bent or straight; and itconsists in a cylindrical cutter'head mounted on an ordinary frame, andrevolving vertically by suitable gearing, constructed, preferably, oftwo cylinders or disks bolted together, having in the center of itsperiphery a groove the shape and size of the curve or oval on thedressed handle, and the cutterknives adjusted from both sides of thecutterhead into the groove, and in the various other combinations anddetails of construction hereinafter described and claimed.

For convenience I will illustrate and describe my invention withreference to the rounding of bent handlessuch, for instance, as are usedon plows and cultivatorsalthough it is effective with many classes ofwoodwork where a rounded or ova-led edge is desired.

In the drawings, Figure I is a rear elevation of a machine embodying myinvention, and showing particularly the construction of the cutter-headand its mounting on the framework. Fig. II is a side view of the cutterhead, showing the mode of adjustment of the cutters thereto. Fig. III isan edge view of one-half of a cutter-head, with parts cut away at mat inFig. II to show the adjustment of the knives; and Figs. IV and V aredetail views of cutter-knives. I

A is a bench or frame such as is ordinarily used with emery-wheels orlike machines, upon which is mounted a cutterrhead, 13, upon (No model.)

a spindle or shaft, 0, rotated by a pulley, D, actuated by a belt orother suitable connec tion with the main driving-shaft. The front end ofthe machine is provided with a block, F, securely bolted on standards G,upon which the material is rested while being run through the machine.

The cutter-head B is of cylindrical form, made of steel, iron, or othersuitable material, constructed, preferably, of two cylindrical pieces ordisks, each having such a curved or jconcaved out, Z), on its innerface, extending from beyond its diameter to its periphery, that whenthey are placed with their curved faces together the curves orconcavesin the disks will form a groove in the head the size and shapeof the dressed handle. When the cutter'head is constructed in twopieces, the latter are securely fastened together by bolts passingthrough bolt-holes If in each and nuts b or otherwise prevented fromhaving inde pendent motion. Each of the disks forming the cutter-headhas one or more openings or ditches, flaring at the top on the outerface thereof, decreasing in width in their inward progress, andterminating at the bottom in narrow crescent-shaped openings Zr in thecurve on the inner face of the disk, the metal being concaved andsharply inclined at one end of therecesses, as at 0 to permitthe readyshedding of the chips from the cutter, and convexed and inclined in likemanner at the opposite end to form beds for the concaved knives.

The cutter-knives E are thin plates of steel, beveled at their cuttingends like ordinary plane blades or bits, concaved on their cutting-facesto fit a convexe'd bed at one end of the openings in the cutter-head,adjustable thereon to regulate the depth of their cutting action byset-screws e, working through a slot, 6, in the knives, and secured bysaid set screw to the head. If desired, the knives, instead of beingconcaved on their cuttingfaces, may be made flat; but in such case thebeds for such knives in the openings in each half of the head must alsopresent a flat surface, and the machine with such shaped cut ters willwork as eifectivel y as with any other. However, for reasons hereinafterstated, the

curved knife is much more desirable, and is the one I prefer.

The number and mode of adjustment of the eutter knives used may bevaried as the size of the head or the character of the wood to be shapedmay render expedient. I have found that, for general purposes, sixknives-three in each half of the head, the knives thereof on oneside'alternating in their appearance on the concave with those on theother-is a very satisfactory and efficient arrangement. The bent handleis held by the operator on the rest-block, and guided by him into thegroove in the head,which, revolving rapidly say two thousand revolutionsper minute-by the action of its cutters, shapes the side of the handleexposed to the cutters the form of said groove. The handle is thenturned over and guided into the groove in like manner, shaping the otherside and completing the rounding of the handle. With some classes ofwork it is desired to round the handles on one side and oval them on theother, or otherwise vary the shape of the different sides, in which caseseveral heads are employed with grooves and knives of the shape to giveto the various sides of the handle the shapes required. Thus, if ahandle is desired oval on top and round underneath, the top of the bentwood is runthrough a machine with about the shape of groove shown in thedrawings, to form the oval, and then turned over and run through asemicircular grooved head to form the rounded surface on the under side.The knives are adjusted to the disks of the cutterhead uponsharply-inclined beds formed in one end of the openings in the disk,thus presenting the cutting-edges of the knives diagonally to the planeof the curved portions of the disks, as shown in Fig. III, similar tothe manner in which plane-bits are secured to the plane frame, theincline on the other side forming a channel for the discharge of thechips made by the cutters, and are adjustable back and forth within thedisks bysetserews working in slots in the knives. By this longitudinaladjustment the depth of the cutting action of the knives may beregulated. The openings, where the cutters enter the curve on thedisks,being narrow,the metal surrounding such openings resists theprogress of the cutters beyond the distance to which the cut ters extendbeyond the curve, and by increasing or diminishing this distance the outmay be made deeper or shallower and the character of the work doneVaried. WVhen the knives are projected to a considerable distance intothe curve, the chips are larger, and the work consequently not so smoothas when the distance which they extend beyond the curve is made shorter;and when they arebut slightly projected the chips are very line and thework very smooth and nice. These adjustments may be made to suit thecharacter of wood being shapedor the character of work required; butwith proper care, with all qualities of wood, the arrangement of theknives may be made so that the handles shaped will be sufficientlysmooth to go directly to the paint-shop without further smoothing orfinishing.

The knife which I prefer is that shown in used a rounded stone the shapeof the curve on the knife must be used.

A roller acting by a yielding pressuremay be hung above the top of thecutter-head where the work to be shaped is of considerable length, tohold the wood down to the action of the cutters and form an additionalguide therefor; but in the shaping of handles I have not found such aroller necessary.

I claim- 1. A cutter-head consisting of a cylinder with a groove in thecenter of its periphery and recesses from either side, terminating innarrow openings on such groove, for the ad j ustment of thecutter-knives.

4 2. A cutter-head constructed of two cylindrical disks, each with sucha concave 011 its inner face, extending from beyond the diameter to theperiphery, that when secured with their curved faces together theconcaves form a groove on the periphery of the head corresponding to theshape and size of the dressed work, with one or more recesses extendingfrom the outer face of each disk, diminishing in width as they progress,and terminating in a narrow opening in the curve, forming beds for thecutters and spouts for the discharge of chips, with knives secured inthe openings.

3. A-cutter-head constructed of two cylindrical disks, each with such aconcave on its inner face, extending from beyond the diameeter to theperiphery, that when secured with their curved faces together theconcaves form a groove on the periphery of the head corresponding to theshape and size of the dressed work, with one or more recesses extendingfrom the outer face of each disk, diminishing in width as they progress,terminating in a narrow opening in the curve, forming beds for thecutters and spouts for the discharge of chips,with slottedyknivessecured in the openings and adjustable longitudinally therein byset-screws.

4. The combination of the frame, the cutter-head with groove in itsperiphery and one or more openings from each side, terminating in anarrow slit on the groove, one or more knives so curved that the bevelon their cutting ends presents a flat surface, and gearing by which thehead is actuated.

AMOS K. OAVERLY.

Witnesses:

GEO. L. MoMAsTER, H. D. BLAKEMORE.

